Grate-bar



Jam

By Afqrne J (No Model.)

I. W. SWALLOW.

GRATB BAB, dw.

d Patented May 25, 1886.

WIM/5885s description, taken in connection with the ac- Aa citizen of the United States, residing at l Nrrno STATESy PATENT OFFICE.;

ISAAC lV. SVALLOW', OF KINGSTON, PENNSYLVANIA.

GRATE-BAR, ste.-

SPECIFICATION forming part of Letters Patent No. 342,766, dated May 25l 1886.

Application filed December 5, 1885.

To a/ZZ whom it may concern,.-

Be it known that I, Isaac W. SwALLow,

Kingston, in the county of Luzerne and State of Pennsylvania, have invented certain new and useful Improvements in Grate-Bars, 812e.; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or gures of reference marked thereon, which form a part of this specication.

Figure l of the drawings is a representation of a plan view of a grate as applied to a locomotive. Fig. 2 is a similar view showing the same in reversed or bottom plan. Fig. 3 is a transverse section taken on line a x, Fig. l, showing the grate closed; and Fig. 4 is a similar section taken ou-line y y,Fig. l, showing the grate open.

My invention has relation to grate-bars for stoves, ranges, locomotive-engines, &c.; and it consists in the construction andnove'l arrangement of parts, as will be hereinafter set forth, and pointed out in the claims.

Referring by letter to the accompanying drawings, I will describe this improvement as applied to a locomotive grate-bar, which companying drawings, will be sufficient to enable persons skilled in the art to which the invention pertains to apply it to a stove, range, or the like.

a designates the nre-box, which is rectangular in form, and is provided with rigid longitudinal bars b b, arranged in pairs in the end walls of the fire-box, and resting also (where more than one section of bars are needed) on intermediate cross-bars, c c, near the bottom of the tirebox.

d d cl are the tumbler-bars, which are free at their ends, and are connected intermediately of their ends by bolts and nuts e to the upper ends of curved arms ff, pivoted in bearing between the cross-bars c c. The tumbler-bars d are of solid wrought-iron, and rest,when in their normal position,in notches v SeriallNo. 184,839. (No model.)

in the upper edges of the cross-bars c c, where water-bars are used, in order that the water-bars may prevent the tumbler-bars from being so rapidly burned out as they would otherwise be. The lower ends of the pivoted arms ff are straight, and are connected by slotted bars y g, the ends of said arms being pivoted in slots h h and h' by nut-bolts. 'Iheupper ends of the pivoted arms f are curved, as shown, so that when the tumblerbars d are raised they will come directly over the space between the rigid bars or water-bars, as the case may be,of each pair of the latter bars.

At one side of the grate a Adouble curved arm, X X, connects two of the tumbler-bars, d di, and is provided with a straight arm, f2, at its lower end. These two connected bars d' d2 I term the double tumblerbars.- By this construction, when the single tumblerbarsand the bar d are raised between and over the rigid bars, the bar d of the double tumbler-bar next to one wall of the fire-box will be lowered, and vice versa. f The shaking-rod O is provided with arms f/ g, which depend through spaces between the adjacent cross-bars c c, and are pivoted by nut-bolts in the slots 7i of the slotted connecting-bars g g, so that all of the' tumblerbars are operated at one and the same time by means of the shaking-lever r, adapted to fit the projecting end of the shaking-rod O.

The heads of the nut-bolts that secure the tumbler-bars to their respective arms rest in countersinks in the top sides of said bars, making the top surfaces of the grate smooth, and also shielding the thread and nut from the fire.

The construction is so simpliiied and arranged that in case'any part becomes worn out or broken it will take but a few minu-tes to replace it with a new one,as it is only necessary to take off two or three nuts to get out any of the several pieces.

Having described this invention, what I claim, and desire to secure by Letters Patent, 1s

l. The combination, with the rigid gratebars, of the single tumbler-bars, the double tumbler-bar, the slotted connectingbar, and In testimony whereof Iafx my signature in supports, substantially as specified. presence of two Witnesses.

2. The combination, with a fire-box having the horizontal rigid grate-bars, arranged ISAAC W. SWALLOW. 5 in pairs, of the single tumbler-bars and bhe double tumbler-bar pivoted below the rigid Titnessesz grate-bars, and connected by the slotted con- .F. H. GATES,

necting-bar,substantially as speoiied. J. BARTON NoRRIs. 

